First person perspective.
Copywriter: I met a very good-looking woman at a volunteer place, but she was my client and she was a mental patient.
She likes to watch the sunset, but is afraid of rain. She always gets sick on rainy days, but when she is not getting sick, she always looks like a dead person.
One day I noticed she was wearing the same ring as me, and then I watched her disappear before my eyes.
I seemed to have had a long dream, and I woke up with tears streaming down my face.
But luckily, I woke up.
Purpose: Since you can't go back to the past, don't let obsession ruin your future.